select.poll and ppoll

[Steven D'Aprano]

Using Python 2.6, don't hate me.

I have select.poll, but I'm looking for something like ppoll instead. From 
the Linux man page:


   ppoll()
       The relationship between poll() and ppoll() is analogous to the
       relationship  between  select(2)  and  pselect(2):  like  pselect(2), 
       ppoll()  allows  an  application to safely wait until either a file
       descriptor becomes ready or until a signal is caught.


Technically, *I* don't want this, it's one of my work-colleagues. He says:

"My high-level goal is to run a callback function whenever the alsa mixer 
level changes.  The C alsa API provides snd_mixer_elem_set_callback, but the 
Python API (import alsaaudio) seems to need me to get poll(2) descriptors"



-- 
Steve